# Copyright 2021 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
"""
 Produce the optimizer
"""

import mindspore.nn as nn


def create_optimizer(param, config):
    config_optimizer = config.OPTIMIZER
    config_learning_rate = config.LEARNING_RATE
    if config_optimizer.function == "Momentum":
        optimizer = nn.Momentum(param, config_learning_rate.params.lr,
                                config_optimizer.params.momentum)
        return optimizer
    return None
